The guys at OverclockersClub Canada look at a Dynatron 80mm Case Fans, check
out what they have to say about it here.

I received a fan today that was, oddly, not wrapped in any individual packaging
whatsoever, but it was part of a whole package, so I guess that would save them
from having to use another box that would only get recycled. After looking at
the label I found out that it is manufactured by Dynatron Corporation, using
their own Top Motor technology. Although this is the first time that I heard
of this name *gasp* I quickly found out that they have a very strong reputation
in high quality cooling solutions.